123 lines
2.7 KiB
Ruby
123 lines
2.7 KiB
Ruby
class Node < GeoRecord
|
|
require 'xml/libxml'
|
|
|
|
set_table_name 'current_nodes'
|
|
|
|
validates_presence_of :user_id, :timestamp
|
|
validates_inclusion_of :visible, :in => [ true, false ]
|
|
validates_numericality_of :latitude, :longitude
|
|
validate :validate_position
|
|
|
|
has_many :old_nodes, :foreign_key => :id
|
|
has_many :way_nodes
|
|
belongs_to :user
|
|
|
|
def validate_position
|
|
errors.add_to_base("Node is not in the world") unless in_world?
|
|
end
|
|
|
|
def in_world?
|
|
return false if self.lat < -90 or self.lat > 90
|
|
return false if self.lon < -180 or self.lon > 180
|
|
return true
|
|
end
|
|
|
|
def self.from_xml(xml, create=false)
|
|
begin
|
|
p = XML::Parser.new
|
|
p.string = xml
|
|
doc = p.parse
|
|
|
|
node = Node.new
|
|
|
|
doc.find('//osm/node').each do |pt|
|
|
node.lat = pt['lat'].to_f
|
|
node.lon = pt['lon'].to_f
|
|
|
|
return nil unless node.in_world?
|
|
|
|
unless create
|
|
if pt['id'] != '0'
|
|
node.id = pt['id'].to_i
|
|
end
|
|
end
|
|
|
|
node.visible = pt['visible'] and pt['visible'] == 'true'
|
|
|
|
if create
|
|
node.timestamp = Time.now
|
|
else
|
|
if pt['timestamp']
|
|
node.timestamp = Time.parse(pt['timestamp'])
|
|
end
|
|
end
|
|
|
|
tags = []
|
|
|
|
pt.find('tag').each do |tag|
|
|
tags << [tag['k'],tag['v']]
|
|
end
|
|
|
|
node.tags = Tags.join(tags)
|
|
end
|
|
rescue
|
|
node = nil
|
|
end
|
|
|
|
return node
|
|
end
|
|
|
|
def save_with_history!
|
|
Node.transaction do
|
|
self.timestamp = Time.now
|
|
self.save!
|
|
old_node = OldNode.from_node(self)
|
|
old_node.save!
|
|
end
|
|
end
|
|
|
|
def to_xml
|
|
doc = OSM::API.new.get_xml_doc
|
|
doc.root << to_xml_node()
|
|
return doc
|
|
end
|
|
|
|
def to_xml_node(user_display_name_cache = nil)
|
|
el1 = XML::Node.new 'node'
|
|
el1['id'] = self.id.to_s
|
|
el1['lat'] = self.lat.to_s
|
|
el1['lon'] = self.lon.to_s
|
|
|
|
user_display_name_cache = {} if user_display_name_cache.nil?
|
|
|
|
if user_display_name_cache and user_display_name_cache.key?(self.user_id)
|
|
# use the cache if available
|
|
elsif self.user.data_public?
|
|
user_display_name_cache[self.user_id] = self.user.display_name
|
|
else
|
|
user_display_name_cache[self.user_id] = nil
|
|
end
|
|
|
|
el1['user'] = user_display_name_cache[self.user_id] unless user_display_name_cache[self.user_id].nil?
|
|
|
|
Tags.split(self.tags) do |k,v|
|
|
el2 = XML::Node.new('tag')
|
|
el2['k'] = k.to_s
|
|
el2['v'] = v.to_s
|
|
el1 << el2
|
|
end
|
|
|
|
el1['visible'] = self.visible.to_s
|
|
el1['timestamp'] = self.timestamp.xmlschema
|
|
return el1
|
|
end
|
|
|
|
def tags_as_hash
|
|
hash = {}
|
|
Tags.split(self.tags) do |k,v|
|
|
hash[k] = v
|
|
end
|
|
hash
|
|
end
|
|
|
|
end
|